Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:04:31 2012 Optimize a model with 383 rows, 392 columns and 1347 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 383 rows, 375 columns, 1330 nonzeros Variable types: 0 continuous, 375 integer (374 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 0.000000e+00, 233 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 144 76.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s 0 0 0.08281 0 146 42.00000 0.08281 100% - 0s H 0 0 22.0000000 0.08281 100% - 0s 0 0 0.68682 0 156 22.00000 0.68682 96.9% - 0s 0 0 0.68682 0 156 22.00000 0.68682 96.9% - 0s H 0 0 15.0000000 0.68682 95.4% - 0s 0 2 0.69535 0 156 15.00000 0.69535 95.4% - 0s * 25 12 18 4.0000000 1.00000 75.0% 32.3 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 57 nodes (3318 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%